HEAVY DUTY TRUCK REAR AXLE IDENTIFICATION A 1955 CAPACITY MODEL APPLICATION AXLE lbs STANDARD OPTIONAL RATIO TYPE CODE 11 000 Ser 4 6 17 to 1 Chevrolet CG 13 000 Ser 6 6 17 to 1 Chevrolet CJ 15 000 Ser 5 Ser 6 6 17 to 1 Chevrolet CH 15 000 Ser 5 6 7 20 to 1 Chevrolet CM 15 000 Ser 4 5 6 5 83 7 95 to 1 Chevrolet C K 15 000 Ser 5 6 6 40 8 72 to 1 Chevrolet CL Vacuum Shift Chevrolet code is stamped on carrier along with date of manufacture 1956 e CAPACITY MODEL APPLICATION AXLE lbs STANDARD OPTIONAL RATIO TYPE CODE 11 000 Ser 4 6 17 to 1 Chevrolet CG 13 000 Ser 6 6 17 to 1 Chevrolet CJ 15 000 Ser 5 7 8 exc 8F Ser 6 6 17 to 1 Chevrolet CH 15 000 Ser 8F 10F Ser 5 6 7 8 exc 8F 7 20 to 1 Chevrolet CM 15 000 Ser 4 5 6 7 8 6 40 8 72 to 1 Chevrolet CL CW 18 000 Ser 9 10 exc 10F TDM 7 17 to 1 Eaton A 18 000 Ser 9 10 exc 10F TDM 6 50 8 87 to 1 Eaton 69 A 30 000 Ser 10 TDM 7 20 to 1 Chevroletf DA DB Vacuum Shift 69 Electric Shift TTwo 15 000 Ib axles Chevrolet code is stamped on carrier along with date of manufacture AEat0n Spec No is stamped on housing arm Ratio and Serial No stamped on carrier 1957 CAPACITY MODEL APPLICATION AXLE lbs STANDARD OPTIONAL RATIO TYPE CODE 11 000 ser 4 6 17 te 1 Chevrolet cc 15 000 Ser 5 6 7 8 10F exc TDM 7 20 to 1 Chevrolet CM 15 000 Ser 5 6 7 8 exc 8F TDM 6 17 to 1 Chevrolet CH 15 000 Ser 4 5 6 7 8 exc D D 6 40 8 72 to 1 Chevrolet CL CN CW 16 000 Ser 9 10 exc 10F TDM Ser 5 6 7 8 10F exc D D 6D 6E 8F TDM 7 17 to 1 Eaton A 16 000 Ser 5 6 7 8 9 10 exc D D SBC 6 50 9 04 to 1 Eaton 69 A 18 000 Ser 9 10 exc 10F TDM 7 17 to 1 Eaton A 18 000 Ser 9 10 exc 10F 6 50 8 87 to 1 Eaton 69 A 30 000 Ser 8 10 TDM 7 20 to 1 Chevroletf DA DB Vacuum Shift 69 Electric Shift 1Two 15 000 Ib axles Chevrolet code is stamped on carrier along with date of manufacture AEaton Spec No is stamped on housing erm Ratio and Serial No stamped on carrier 197O CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31S 85